HOMER AND MARGE PLAY MUSICAL HOUSES ON "THE SIMPSONS" SUNDAY, MAY 21, ON FOX

Ricky Gervais Makes Guest Voice Appearance Homer's obsession with Lenny's new plasma TV prompts Marge to enter the family in a sweepstakes, and they win a trip to the Fox Studio Lot. Against Marge's wishes, Homer signs them up for a "Trading Spouses"-type show and is forced to take in a controlling wife, while Marge moves in with a beaten-down husband, Charlie (guest-star Ricky Gervais), and his perfect son. Charlie quickly develops a crush on Marge, while she tries to give him the strength to stand up to his own wife on THE SIMPSONS episode "Homer Simpson, This Is Your Wife" airing Sunday, May 21 (7:30-8:00 PM ET/PT) on FOX. (SI-1708) (TV-PG D) Voice Cast: Dan Castellaneta as Homer Simpson, Mayor Quimby and Groundskeeper Willie, Julie Kavner as Marge Simpson and Patty; Nancy Cartwright as Bart Simpson and Nelson Muntz; Nelson, Ralph and Kearney; Yeardley Smith as Lisa Simpson; Harry Shearer as Kent Brockman, Mr. Burns and Smithers; Pamela Hayden as Milhouse; Hank Azaria as Cletus and Carl.

Guest Voice: Ricky Gervais as Charlie.